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How Can I reproduce it?.
If it's ocurring randomly then could be WebCenter caching problem. Try to refresh WebCenter Spaces cache with WLST Scripts.
refreshGroupSpaceCache(appName='webcenter', spaceNames='', syncMode=1,updateType='all', cleanCache=1) refreshSpaceTemplateCache(appName='webcenter', spaceTemplateNames='',syncMode=1, updateType='all', cleanCache=1)
unfortunately it's not easy to reproduce this. It only occurs on our production environment - not development or test, so the only clue I have at this time is that it may be caused by something that is different between the environments (such as a WebLogic cluster, JRockit vs. Hotspot, etc.).
I have not tried the WLST commands yet, will give it a try on Friday when I am onsite.
It does look like it is related to caching. Like the MDS resources expire after some time and are not reloaded in time unless there's a particular trigger for it.
Production only?. Then we can't change trace level's to finest value :/.
We have been struggling with a similar problem for quite some time. In our case, our home page on the Personal Space will suddenly display with the default page template instead of our custom template. We can navigate to other Spaces that use the same page template and it displays fine. The only way to fix the issue is to restart the Spaces managed server. Oracle support has pointed us to look at the Java heap but we don;t have a solution yet. Document ID 1479143.1 describes a similar issue.
Thanks for pointing out that note - It didn't come up in my searches. Maybe it has to do with using JRockit then.
However I doubt the memory settings are undersized, it's set to 3g actually :)
We have our memory set to 2.5GB and I have observed the Heap size go up close to that limit in our test environment.
Also, I tried the earlier suggestion to refresh the WebCenter Spaces cache via WLST. That suggestion did not clear the issue.
Ed Estinto wrote:I have seen this happen a few times in my dev environment. A restart was the only way to fix this. Also, this was not limited to the personal space but to all spaces that used the custom template.
We have been struggling with a similar problem for quite some time. In our case, our home page on the Personal Space will suddenly display with the default page template instead of our custom template. >
It very much looks like the problem described here is exclusive to JRockit. With the Oracle JDK everything runs fine.
We are now testing JRockit with -XNoOpt set, so far so good.
Looks like the -XnoOpt parameter has fixed the problem for us. We have gone over a week without the issue. Usually we could run some load tests and trigger it within a few hours.
Thanks a lot for the suggestion. We had been dealing with this problem for months.
good to hear that. We haven't seen the problem anymore since switching on -XNoOpt, so we will propagate this setting to our production environment as well.